// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
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//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
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package org.objectweb.asm.tree;

import org.objectweb.asm.Opcodes;
import org.objectweb.asm.TypePath;

/**
 * A node that represents a type annotation.
 *
 * @author Eric Bruneton
 */
public class TypeAnnotationNode extends AnnotationNode {

	/** A reference to the annotated type. See {@link org.objectweb.asm.TypeReference}. */
	public int typeRef;

	/**
	 * The path to the annotated type argument, wildcard bound, array element type, or static outer type within the referenced type. May be {@literal null} if the annotation targets 'typeRef' as a whole.
	 */
	public TypePath typePath;

	/**
	 * Constructs a new {@link AnnotationNode}. <i>Subclasses must not use this constructor</i>. Instead, they must use the {@link #TypeAnnotationNode(int, int, TypePath, String)} version.
	 *
	 * @param typeRef
	 *          a reference to the annotated type. See {@link org.objectweb.asm.TypeReference}.
	 * @param typePath
	 *          the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be {@literal null} if the annotation targets 'typeRef' as a whole.
	 * @param descriptor
	 *          the class descriptor of the annotation class.
	 * @throws IllegalStateException
	 *           If a subclass calls this constructor.
	 */
	public TypeAnnotationNode(final int typeRef, final TypePath typePath, final String descriptor) {
		this(Opcodes.ASM7, typeRef, typePath, descriptor);
		if (getClass() != TypeAnnotationNode.class) {
			throw new IllegalStateException();
		}
	}

	/**
	 * Constructs a new {@link AnnotationNode}.
	 *
	 * @param api
	 *          the ASM API version implemented by this visitor. Must be one of {@link Opcodes#ASM4}, {@link Opcodes#ASM5}, {@link Opcodes#ASM6} or {@link Opcodes#ASM7}.
	 * @param typeRef
	 *          a reference to the annotated type. See {@link org.objectweb.asm.TypeReference}.
	 * @param typePath
	 *          the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be {@literal null} if the annotation targets 'typeRef' as a whole.
	 * @param descriptor
	 *          the class descriptor of the annotation class.
	 */
	public TypeAnnotationNode(final int api, final int typeRef, final TypePath typePath, final String descriptor) {
		super(api, descriptor);
		this.typeRef = typeRef;
		this.typePath = typePath;
	}
}
